Forbes' 2016 list of the World's Billionaires includes 1,810 billionaires, down from a record 1,826 a year ago.

Their aggregate net worth is $6.48 trillion, $570 billion less than last year.

Gates remains the richest person in the world with a net worth of $75 billion, despite being $4.2 billion poorer than a year ago. He has been number one for 3 years in a row and topped the list 17 out of 22 years.

Forbes said Ambani, 58, has retained his position as India's richest person despite shares of his oil and gas giant Reliance Industries taking a hit due to lower oil prices.

He is ranked 36th on the list with a net worth of $20.6 billion, the magazine said, adding that "the $62.2 billion (revenues) firm is likely to resume buying crude oil from Iran after the lifting of sanctions."

Occupying the second spot on the list is Spanish billionaire Amancio Ortega, founder of closing retail giant Zara and the richest man in Europe.

RELATED

Subscribe to our Newsletters

The ongoing field development and EOR/IOR projects are expected to produce a cumulative of 54.6 million tonne (mt) of crude oil and 114 billion cubic meter (bcm) of natural gas in the next three to four years, the report said.